From nobody Wed Feb 11 12:08:37 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0BAD4C77B75 for ; Tue, 9 May 2023 09:21:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234972AbjEIJVs (ORCPT ); Tue, 9 May 2023 05:21:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234887AbjEIJVG (ORCPT ); Tue, 9 May 2023 05:21:06 -0400 Received: from frasgout13.his.huawei.com (frasgout13.his.huawei.com [14.137.139.46]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 32E57E72C; Tue, 9 May 2023 02:20:48 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.18.147.228]) by frasgout13.his.huawei.com (SkyGuard) with ESMTP id 4QFsp55056z9v7R0; Tue, 9 May 2023 17:10:53 +0800 (CST) Received: from A2101119013HW2.china.huawei.com (unknown [10.81.212.219]) by APP2 (Coremail) with SMTP id GxC2BwDHdz7lD1pksN2OAg--.5S8; Tue, 09 May 2023 10:20:08 +0100 (CET) From: Petr Tesarik To: Jonathan Corbet , Greg Kroah-Hartman , "Rafael J. Wysocki" , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Christoph Hellwig , Marek Szyprowski , Robin Murphy , "Paul E. McKenney" , Borislav Petkov , Randy Dunlap , Catalin Marinas , Damien Le Moal , Kim Phillips , "Steven Rostedt (Google)" , Andy Shevchenko , Hans de Goede , Jason Gunthorpe , Kees Cook , Thomas Gleixner , linux-doc@vger.kernel.org (open list:DOCUMENTATION), linux-kernel@vger.kernel.org (open list), dri-devel@lists.freedesktop.org (open list:DRM DRIVERS), iommu@lists.linux.dev (open list:DMA MAPPING HELPERS) Cc: Roberto Sassu , Kefeng Wang , petr@tesarici.cz Subject: [PATCH v2 RESEND 6/7] drm: Use DMA_ATTR_MAY_SLEEP from process context Date: Tue, 9 May 2023 11:18:18 +0200 Message-Id: X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: GxC2BwDHdz7lD1pksN2OAg--.5S8 X-Coremail-Antispam: 1UD129KBjvJXoW7ZF4kXFWDJF1Duw1rJry5Jwb_yoW8XFWkpF 4xAFyqqrW0qFZYva9rZ3WkZa43ua17tFWxua4UJ395u3WYyF9FgryYy3y2qrWDAr97Xr4S qr9Fyryjyry2kFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPCb4IE77IF4wAFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k2 6cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUAV Cq3wA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0 rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWUCVW8JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267 AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_Gr0_Cr1l84ACjcxK6I8E87Iv6xkF7I0E 14v26r4UJVWxJr1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrV C2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE 7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwACI402YVCY1x02628vn2kIc2xKxwCY1x0264 kExVAvwVAq07x20xyl42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2Iq xVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r WY6r4UJwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4UMIIF0xvE2Ix0cI8I cVCY1x0267AKxVW8Jr0_Cr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87 Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI 43ZEXa7IU8gAw7UUUUU== X-CM-SenderInfo: hshw23xhvd2x3n6k3tpzhluzxrxghudrp/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Petr Tesarik These mappings are never done from atomic context. If a dynamically allocated bounce buffer is used for the mapping, this change allows to allocate from CMA. Signed-off-by: Petr Tesarik --- drivers/gpu/drm/drm_gem_shmem_helper.c | 2 +- drivers/gpu/drm/drm_prime.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_g= em_shmem_helper.c index 4ea6507a77e5..b32dcefb17a9 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -709,7 +709,7 @@ static struct sg_table *drm_gem_shmem_get_pages_sgt_loc= ked(struct drm_gem_shmem_ goto err_put_pages; } /* Map the pages for use by the h/w. */ - ret =3D dma_map_sgtable(obj->dev->dev, sgt, DMA_BIDIRECTIONAL, 0); + ret =3D dma_map_sgtable(obj->dev->dev, sgt, DMA_BIDIRECTIONAL, DMA_ATTR_M= AY_SLEEP); if (ret) goto err_free_sgt; =20 diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index d29dafce9bb0..ac28489943b8 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -639,7 +639,7 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_att= achment *attach, return sgt; =20 ret =3D dma_map_sgtable(attach->dev, sgt, dir, - DMA_ATTR_SKIP_CPU_SYNC); + DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_MAY_SLEEP); if (ret) { sg_free_table(sgt); kfree(sgt); --=20 2.25.1